package job.job_0818;

public class Count {//计算1/1-1/2+1/3-1/4+1/5 …… + 1/99 - 1/100 的值
    public static void main(String[] args) {
        double sum=0;
        int tmp=1;
        for(int i=1;i<=100;i++){
            sum+=1.0/(i*tmp);
            tmp=-tmp;
        }
        System.out.println(sum);
    }
}
